Cochise County, Arizona, US
The sand-covered, silken cocoon of the chaparral yucca moth (Tegeticula maculata).
Yucca Moth (Tegeticula yuccasella) found on door of my building 6106 S. University Ave.
Little Peppered Greya Moth (Greya piperella) - Top view using flash. Identification is tentative; compare with photographs at these links:
Looks like the hind wings are partially hidden by the forewings in this view. Hind wings are grey snd seem to be giving the forewings a grayish cast.
Female on host plant, Bowlesia incana.
The Prodoxidae are a family of moths, generally small in size and nondescript in appearance. They include species of moderate pest status, such as the currant shoot borer, and others of considerable ecological and evolutionary interest, such as various species of "Yucca Moths".